Urban Bergsten, abstract

Large-scale commercial production of new biorefinery products could be
possible in the near future thanks to the wide range of biomaterials that can
be produced from tree biomass. It may though be necessary to better define tree
assortments from their properties as an engineering material in industry. The
chemical properties (e.g. content of extractives) might for an example obtain
increased attention soon. Therefore, guidelines for silviculture should not
only include estimates of biomass development but also quantify the amount of
extractives per hectare that could be obtained over time in different tree
parts. The silvicultural regime affects yield of extractives, depending on,
e.g., the actual composition of species, site fertility, tree age, tree
partitioning and tree size. Improved estimation of assortments' material
properties might facilitate a cost-effective transition to a bio-economy.